DRAFT
TD 93021US
17 July 2017 / Ver. PF3
185
Installation Guide
teleCARE IP
8.7.8 NILF Power Supply
The NILF can be powered by batteries or by an external 24Vdc power supply.
For 24Vdc external power supply, use only a certified ECS power supply (see Section 4.).
Placing the Batteries
The NILF requires three 1.5V “C” (R14) alkaline batteries. The battery voltage is continually monitored.
A red LED will indicate low battery status (1 flash per minute) and tamper alarm (continuous rapid
flashing). Under normal circumstances the battery life is minimum one year.
Figure 246. Placing the three 1.5V “C” (R14) alkaline batteries
WARNING:
When NILFs are fitted with batteries do not store them within range of NITXs as this
will result in continuous transmissions of location messages which could drain the
batteries and cause the NITXs to eventually lock up. For this reason, it is best not to fit
the batteries in the NILFs until after they are installed.